By RICHARD PÉREZ-PEÑA. The long enrollment boom that swelled American colleges — and helped drive up their prices — is over, with grim implications for many schools. College enrollment fell 2 percent in 2012-13, the first significant decline since the 1990s, but nearly all of that drop hit for-profit and community colleges; now, signs point to 2013-14 being the year when traditional four-year, nonprofit colleges begin a contraction that will last for several years. Read more...